Phonograph-case construction



' D. T. ALLEN PHONOGRAPH CASE QONSTRUCTION Dec. 8, 1925 1,564,808

Filed A1121. 29. 1925 lllilliml\\\\..

Patented Dec. 8, 1925. I

, UNITED "STATES DONALD r, menu, or MILWAUKEE, WISCONSIN, AssreEoE TO rEIIviE MEG. 00., or MILWAUKEE, -w1soonsm.

rnonoenarn-onsn CONSTRUCTION.

Application med August 29, i925. Serial Ito-53,354.

To all whom it may concern:

Be it known that I, DONALD T. ALLEN, a citizen of'the United States, and resident of Milwaukee, in the county of Milwaukee and State of isconsin, have invented certain new and useful Improvements in Phonograph-Case Constructions;v and I do here by declare that the following is a full, clear, and exact description thereof.

This invention relates tophonograph case construction.

In certain types of phonographs, such as the portable ones, it has been the practise to provide a sound box below the tone arm and connecting such tonearm with the main outlet. T his'sound box has universally been made of metal and has been of roundedconstruction to facilitate theforming operations. The metal has not been satisfactory due to the tiny sounds and also the curved shape has been found to distort the sounds materially.

Further, this construction has been found to be relatively expensive and materially adds to the cost of the instrument.

This invention is designed to overcome the above noted defects, and objects of this invention are to provide a sound box which is non-metallic, which is of angular construction, and which is so made that it is possible to employ a large amount of scrap material in its manufacture, and to thus materially reduce the cost of this portion of the device.

An embodiment of the invention is shown in the accompanying drawings, in which Figure 1 is a fragmentary sectional view through the sound box.

Figure 2 is a bottom view thereof. Figure 3 is a side elevation. Referring to the drawings, it will be seen that the usual tone arm is indicated at 1,

and that the top 2 is provided with the usual outlet 3. The sound box is constructed primarily of three members of fiber board. A pair of side members, indicated by the reference character 4, are provided and have flat upper edges, as shown in Figures 1 and 3. Their lower sides are defined by an angular edge 5 which joins a second clownwardly extending angular edge 6.

From the lowest point of the edge 6a second edge 7 extends upwardly to the forward portion of the box, as most clearly brought out in Figure 3.

Thebottom of the box'consistsof: afiber strip which is flared from one end to the other, and is scored andfolded so as to provide a flat face 8 conformingto the edge 5, asecond fiat face 9 conforming-to the edge (3 and a third fiat face '10 conforming to the edge The scorelines are positioned at the corners where the fold occursto faacross the faces 8 and 10 of the bottom of.

the box. These fabric strips have outwardly projecting. flaps 14C for a purpose hereinafter to appear; End strips 15 and 16 are glued to the faces 8 and 10 and also are glued down upon thefolded ends 12 and 13 of the strips 11, as shown most clearly in Figure 2. These end strips are tions 17 and 18.

The box is lined by means of the covering or strip 19 (see Figure 1) which terminates at the edges of the. box, as shown. This strip'may continue up the inner sides of the box, and may be one blank or may be composed of a plurality of blanks. If desired, the bottom of the boxmay also be glued to the side portions 4. However, it is to be noted that the inturned ends 12 and 13 of I provided with free outwardly turned por-'j the strips 11 tie the bottomvto the side edges f in a very secure manner, and such tying ends are held down also by means of the glued:

strips 15 and 16.

After the sound'box'has been formed the edges thereof are coated with glue, together witlrtheprojecting flaps la, 17, and 18, such flaps and edges are stuck to the under side of the top 2, as shown in Figure 1, thus se curely attaching the sound box in position,

so as to connect the tone arm with the out let 8. I

It is to be noted that the flat bottom face 8 deflects the sound towards the flat face 10 without interference and such sound is projeoted upwardly through the outlet 3.- Further, any angularly directed sound waves will strike the slanting surface 9 and will also be reflected and projected out of the opening 3.

It has been found that this an- I gular construction does not produce a j throaty or imperfect articulation but pro:

duces a remarkably clear articulation.

It isto be particularly noted. that the material forming this sound box is extremely cheap and is non-metallic. Further, it is the usual-practise to form the tops and'sides of these phonographs with a finishing'covering (see Figure 1) of fabric or imitation leather;

In practising this invention, the scraps of this material are employed in forming Although the invention has'been described in considerable detail, it is to be understood that the invention may be variously embodied and is,-therefore, to be limited only as claimed.

I claim:

1. A sound box for phonographs'coinprising a pair of side faces 'having angular bottom, edges, a bottom-secured to the edges of the sides, said'bottom and sides being formed of non-metallic material, and glued flexible strips secured to said bottom and sides and having projecting attaching 'fiaps.

2. In a'p'honograph, the combination of a top, a sound arm opening downwardly therethrough, said top' having a delivery opening, a sound box positioned below said top, and connecting said tone arm and said delivery opening, said sound box having a pair of flat sides provided with angular bottom edges, a bottom secured to said angular bottom edges and sharplybent at'the ends of each of said edges, fabric strips glued to said sides and having inwardly-turned projecting ends overlapping said bottom, end strips glued to said bottoin'and overlapping the said inwardly turned ends, each of said strips having outwardly projecting flaps glued to the under side of the saidtop, said sound box having one of the angular faces of its bottom positioned directly below said tone arm. r

In testimony that I claim the foregoing I have hereunto set-my hand at Milwaukee,

in the county of Milwaukee and State of Wisconsin.

DONALD T. ALLEN. 

